johnston



No. 606,784. Patented July 5, I898.

].- JOHNSTON.

No. 606,'784. Pate nted July 5, I898. 1. JOHNSTON.

OlL BURNER.

(Application filed Apr. 19, 1897.)

: nms versus coy, rnomumu. WASHINGTON, a c.

UNITED STATES jfPATENT OFFICE;

JONATHAN JOHNSTON, OE-MQRGAN PARK, ILLINOIS, ASSIGNOR TO HERBERT I 0. BEN Tn'or-cHIoAeo,ILLINOIS;

srncrrrca'rron foi'ma at 6f Lara. Patent No. 606,784, dated July 5,1898.

- Application filed A ril 19, 897.

T aZZ whom it may concern/.

vtity of free oil than heretofore.

Be it known that I, JONATHAN JOHNSTON, a,

citizen of the United States, residing at Mor gan Park, in the countyiofCool: and State'of Illinois, have invented certain new and usefulImprovements in Oil-Burners,"of "which the following is a full,clear,andexact specification.

My invention relates to that class of burners for burning hydrocarbonoils and other like fluids in which the oil is admitted first into aretort in which it is converted into vapor by the heat of such vaporburned under the retort; and my invention has for its object generallyto provide an improved and effective form of construction consisting'oftheminimum number of simple, durable, and inexpensive parts. I

Another object of my invention is to provide improved means for readilyproducing the initial heating of theretort, whereby the same may beaccomplished witha less quan With these ends in view my inventionconsists in certain features of novelty in the construction, combination,and arrangement of parts by which the saidobject and certain otherobjects hereinafter appearing are at-I tained, all as fullyde'scribed,with reference to the accompanying drawings, and more particularlypointedfout in the claims.

In the said drawings, Figure 1 is a plan View of my improved burner.Fig. 2 is a side elevation thereof, partly broken away. Fig. 3 is avertical transverse section taken on the line 3 3, Figs. 1, 4, and 5.1,Fig. 4 is a front elevation, partly in section, taken on the line 4 4,Figs. 1 and 2. Fig. 51s transverse sec tion taken on the line 5 5,Fig.2; and Fig. 6 is a plan view of the base por'tion.'

Incarrying out my invention I construct the burner of two principalparts, one of which is in the form of an inverte'dpan or cup, whosedepending rim or side wall is hollowed out so as to constitute a,surroundingjretort, and depending froin'the bottom of this dependingcup orpan is ajcontinuousringor flange of smaller diameter than saidsurrounding retort. The other of said portions or the base portion isformed with two continuous channels or troughs, one surrounding theother seals No. 632,786 (to model.)

and being located under said depending flange and retort, respectively,and into which troughs the latter portions depend. This base portionis'also provided with a central inlet formed through its bottom andsurrounded 'bythe inner one of the said troughs for the admission of thevapor to the spaces between these two main portions of the burner.

Referring more specifically to the drawings, the base portion of theburner is constituted by a plate or casting 1, having a number ofsupporting-feet 2, if desired, and provided with a subway or passage 3,which extends fromside to side thereof, and has an upwardly,extending'outlet 4, located substantially at the center of the burner oroutlet at a point removed from the inner extremity of the subway 3.'Supported concentrically within this subway 3 is a tube 5 ofconsiderably smaller diameter than thepassage 3, which extendsbackwardly into the latter and terminates at a'point beyond the outlet4, the outer end of the pipe 5 being arranged opposite the injector 6,so that the gas or Vapor admitted at the outer end of the pipe 5 will becompelled to pass to the rear end of the passage 3 and again traverse aportion :of the length of the passage3before discharging through theopening 4, thus'insuring a thorough mixing of the air and vapors beforereaching the point z of combustion in the burner.

The. opening or outlet 4 is surrounded by a standing flange'7,'which iscontinuousor V A annular' and which, together with a flange 8constitutes the'inneroneof the continuous or annular channels or troughshereinbefore referred to, while the outer one of such channels ortroughs is constituted by the flange 8 and a marginal'flange 9, risingfrom the outer edge of the'plate 1. ,1

The upper or inverted-cup-like portion of the burner is constituted by asubstantially flat plate 10 and a surrounding dependingretort 11, whichis .annular in plan view and preferably cylindrical in cross-section.The plate 10 is supportedata distanceabove the upper end of-the flange 7,and the retort ll depends into the trough or channel formed bythe'flanges 8 9, so that the outer periphery of the retort 11, togetherwith the flange 9, will form an annular space or outlet for the burninggases, which in issuing therefrom will partially envelop the retort byvirtue of its tendency to follow upwardly around its curve. The bottomof the channel formed by the flanges S 9 is preferably curvedconcentrically with the bottom of the retort 11. The retort may besupported in any suitable manner-such as, for instance, by a number ofshort curved lugs 12, formed between the flanges S E), and the uppermember of the burner held firmly in place with the retort, resting uponthese lugs, by a number of vertical bolts or screws 13.

Extending downwardly from the bottom of the plate 10 and depending intothe trough or channelformed bythe'flanges 7 Sis a flange 11- of annularform,which extends below the upper edges of both flanges 7 8, and thusconstitutes a tortuous passage for the gases or vapors as they risethrough the opening 4t and strike the plate 10, thereby insuring athorough mixing before discharging at the outlet between the retort 11and the flange 9, at which point combustion takes place.

The outer end of the subpassage 3 is extended, as shown more clearly inFig. 3, and its end is provided with a screw-cap 15, having a threadedflange 10 on its inner side, which constitutes means for supporting thepipe 5, the cap being provided with an opening 17, opposite which theinjector 0 is arranged. The injector (3 is connected by a pipe 18 withthe outlet 19 of the retort, the inlet of the retort being shown at 20and being located on the same side as the outlet 19, but the retortbeing divided between the inlet and outlet by a plug 2 Contiguous to theoutlet 19 the retort is provided with a supplemental outlet 22, which isconnected by pipe 23 to an auxiliary burner it, having a suitableneedlevalve 25 and arranged opposite the space between the plate 1 andthe retort 11, so that in starting the burner a flue spray may beinjeeted against the bottom of the retort at a point adjacent to themain outlet 19, and thus more quickly gasify or vaporize the oil in theimmediate vicinity of the outlet 10 than could be accomplished byattempting to heat the entire retort. The outer flange 9, opposite themouth of the injector Z-t, is cut awaybetween the points 20 27 toaccommodate pipes 18 23 and to admit the flame or spray from theilljector 21-, as more clearly shown in Figs. t and G. The flame fromthe injector 2-1 not only plays against the bottom of the retortimmediately opposite, but travels around the retorta considerabledistance within the flange 9, and the pipe 23 being more or lessrotatable in the auxiliary outlet the injector 2; may be raised orlowered, as desired, for causing the flame or spray issuing therefrom tostrike the retort 11 at the proper point.

Arranged under the injector 24L is a drippan 28 for catching the oildripping from the nozzle or injector 21 and also for heating theconnection leading down to the injector when desired, and thusconverting the contents of the latter into vapor before it isdischarged.

In order that the flame from the pan 28 and nozzle ll may not find itsway into the inlet 17 of the pipe 5, the collar 15 is provided with anupwardly-extending flange 2.), which partially overlaps the end of thepan 28 and also flts against the outer end of a bridge or web 30,extending from the inner edge of the pan 28 and overlapping theextension 3 of the passage 3, thus preventing the flame from creepingunder the extension 3 and finding its way into the inlet 17. The upperedge of the flange 29 is notched or cut away for the admission of thepipe 18.

The interior of the retort 11 is formed on a gradual continuous inclinefrom its inlet 20 to its main outlet 19, so that there will be affordedno opportunity for the residuum to collect therein, and in order thatthe deposit of residuum may be still further guarded against theoutlet-pipe 18 is also inclined toward the nozzle (3 and is ofsubstantially the same diameter as the interior of the retort, wherebythe formation of a shoulder for the collection of residuum is avoided.

Having thus described myinvention, what Iclaim as new therein, anddesire to secure by Letters Patent, is-

1. An oil-burner consisting of two detachable portions, the upper one ofwhich is in the form of an inverted. cup or pan having its dependingsurrounding wall or rim made hollow and constituting a retort having aninlet and an outlet, a ring or rim depending from the bottom of said panand being arranged concentrically within and at a distance from saidwall, and the base or other of which portions is in the form of twoconcentric channels or troughs in which said retort and ring on theupper portion depend respectively, the inlet for the vapor being formedthrough the bottom of said base portion and surrounded by the inner oneof said channels and being in communication with the out-let of theretort, substantially as set forth.

2. An oil-burner consisting of two detachable portions one of which isin the form of an inverted cup or pan whose depending outer wall or rimis hollow and constitutes a retorthaving an inlet and an outlet and aring or flange arranged concentrically within said wall and dependingfrom the bottom of said cup or pan, and the other of which portionsconsists of two annular concentric channels into which said retort andflange depend respectively, the inlet for the vapor being formed throughthe bottom of said second portion and surrounded by the inner one ofsaid channels, supporting-lugs arranged in one of said channels forholding said I] rst portion of the burner aloof, and bolts passingthrough said portions of the burner for binding the same together,substantially as set forth.

0. An oil-burner consisting of two detachsoaps i a IO said trough, saidbase portion having a bottom inlet for the vapor and a flange risingtherefrom around said inlet and around which said trough extends, and aninjector connected with the outlet of said retort and having its enddirected into said inlet of the I 5 base portion, substantially as setforth.

JONATHAN JOHNSTON. Witnesses:

EDNA BrJoHNsoN, FJA. HOPKINS.

